BLIS_ARCH="generic" tip -maybe put it in some config ot setup.py?

Termux.
```
Environment at system:
Linux localhost 4.14.186+ #1 SMP PREEMPT Thu Mar 17 16:28:22 CST 2022 aarch64 Android
LD_PRELOAD: LD_LIBRARY_PATH: /data/data/com.termux/files/home/.local/lib: CC: clang CXX: clang++ C_INCLUDE_PATH: /data/data/com.termux/files/usr/lib/qt/mkspecs/common/uikit/:/data/data/com.termux/files/usr/include/epoxy/ FC: /data/data/com.termux/files/usr/bin/flang CFLAGS: CXXFLAGS: LDFLAGS: -lm -lpython3.11 -llog CPPFLAGS:
```
This is needed: `BLIS_ARCH="generic" pip install spacy`, see here why: https://github.com/termux/termux-packages/issues/6187#issuecomment-753304638

Installs fine without it in Prooted Debian, though.

Tip: the config may need to detect it somehow.